./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/McCarthy91-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aefaf776-1add-403e-af58-9a88e1750417/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aefaf776-1add-403e-af58-9a88e1750417/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aefaf776-1add-403e-af58-9a88e1750417/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aefaf776-1add-403e-af58-9a88e1750417/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/McCarthy91-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aefaf776-1add-403e-af58-9a88e1750417/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aefaf776-1add-403e-af58-9a88e1750417/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e87f89409ab3e763661ad617b0dadcb988e72d1 ................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:22:33,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:22:33,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:22:34,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:22:34,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:22:34,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:22:34,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:22:34,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:22:34,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:22:34,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:22:34,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:22:34,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:22:34,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:22:34,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:22:34,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:22:34,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:22:34,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:22:34,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:22:34,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:22:34,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:22:34,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:22:34,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:22:34,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:22:34,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:22:34,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:22:34,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:22:34,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:22:34,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:22:34,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:22:34,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:22:34,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:22:34,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:22:34,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:22:34,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:22:34,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:22:34,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:22:34,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:22:34,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:22:34,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:22:34,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:22:34,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:22:34,067 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aefaf776-1add-403e-af58-9a88e1750417/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:22:34,108 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:22:34,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:22:34,110 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:22:34,110 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:22:34,110 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:22:34,110 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:22:34,111 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:22:34,111 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:22:34,117 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:22:34,117 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:22:34,118 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:22:34,119 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:22:34,119 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:22:34,119 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:22:34,119 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:22:34,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:22:34,121 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:22:34,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:22:34,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:22:34,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:22:34,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:22:34,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:22:34,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:22:34,122 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:22:34,122 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:22:34,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:22:34,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:22:34,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:22:34,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:22:34,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:22:34,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:34,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:22:34,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:22:34,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:22:34,126 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:22:34,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:22:34,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:22:34,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:22:34,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:22:34,127 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aefaf776-1add-403e-af58-9a88e1750417/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aefaf776-1add-403e-af58-9a88e1750417/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e87f89409ab3e763661ad617b0dadcb988e72d1 [2021-10-11 02:22:34,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:22:34,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:22:34,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:22:34,445 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:22:34,446 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:22:34,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aefaf776-1add-403e-af58-9a88e1750417/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/recursive/McCarthy91-2.c [2021-10-11 02:22:34,519 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aefaf776-1add-403e-af58-9a88e1750417/bin/utaipan-WLngWcDbfI/data/19498d7fc/a717ccdd6c9048708c283e072291c0ad/FLAGd7aeb5ee1 [2021-10-11 02:22:34,943 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:22:34,944 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aefaf776-1add-403e-af58-9a88e1750417/sv-benchmarks/c/recursive/McCarthy91-2.c [2021-10-11 02:22:34,951 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aefaf776-1add-403e-af58-9a88e1750417/bin/utaipan-WLngWcDbfI/data/19498d7fc/a717ccdd6c9048708c283e072291c0ad/FLAGd7aeb5ee1 [2021-10-11 02:22:35,349 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aefaf776-1add-403e-af58-9a88e1750417/bin/utaipan-WLngWcDbfI/data/19498d7fc/a717ccdd6c9048708c283e072291c0ad [2021-10-11 02:22:35,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:22:35,356 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:22:35,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:35,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:22:35,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:22:35,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:35" (1/1) ... [2021-10-11 02:22:35,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20bee04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:35, skipping insertion in model container [2021-10-11 02:22:35,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:35" (1/1) ... [2021-10-11 02:22:35,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:22:35,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:22:35,599 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aefaf776-1add-403e-af58-9a88e1750417/sv-benchmarks/c/recursive/McCarthy91-2.c[749,762] [2021-10-11 02:22:35,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:35,611 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:22:35,638 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aefaf776-1add-403e-af58-9a88e1750417/sv-benchmarks/c/recursive/McCarthy91-2.c[749,762] [2021-10-11 02:22:35,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:35,654 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:22:35,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:35 WrapperNode [2021-10-11 02:22:35,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:35,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:35,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:22:35,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:22:35,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:35" (1/1) ... [2021-10-11 02:22:35,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:35" (1/1) ... [2021-10-11 02:22:35,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:35,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:22:35,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:22:35,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:22:35,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:35" (1/1) ... [2021-10-11 02:22:35,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:35" (1/1) ... [2021-10-11 02:22:35,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:35" (1/1) ... [2021-10-11 02:22:35,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:35" (1/1) ... [2021-10-11 02:22:35,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:35" (1/1) ... [2021-10-11 02:22:35,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:35" (1/1) ... [2021-10-11 02:22:35,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:35" (1/1) ... [2021-10-11 02:22:35,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:22:35,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:22:35,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:22:35,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:22:35,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:35" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aefaf776-1add-403e-af58-9a88e1750417/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:35,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:22:35,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:22:35,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:22:35,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:22:35,782 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2021-10-11 02:22:35,782 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2021-10-11 02:22:36,010 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:22:36,010 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 02:22:36,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:36 BoogieIcfgContainer [2021-10-11 02:22:36,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:22:36,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:22:36,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:22:36,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:22:36,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:22:35" (1/3) ... [2021-10-11 02:22:36,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0e7bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:36, skipping insertion in model container [2021-10-11 02:22:36,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:35" (2/3) ... [2021-10-11 02:22:36,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0e7bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:36, skipping insertion in model container [2021-10-11 02:22:36,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:36" (3/3) ... [2021-10-11 02:22:36,021 INFO L111 eAbstractionObserver]: Analyzing ICFG McCarthy91-2.c [2021-10-11 02:22:36,048 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:22:36,065 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:22:36,075 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:22:36,120 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:22:36,120 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:22:36,120 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:22:36,120 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:22:36,120 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:22:36,120 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:22:36,120 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:22:36,120 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:22:36,135 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2021-10-11 02:22:36,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:22:36,160 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:36,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:36,161 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:36,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:36,172 INFO L82 PathProgramCache]: Analyzing trace with hash 2045921670, now seen corresponding path program 1 times [2021-10-11 02:22:36,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:36,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500771772] [2021-10-11 02:22:36,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:36,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:36,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500771772] [2021-10-11 02:22:36,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:36,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:22:36,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493633924] [2021-10-11 02:22:36,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:22:36,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:36,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:22:36,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:22:36,605 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 6 states. [2021-10-11 02:22:36,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:36,751 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2021-10-11 02:22:36,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:22:36,753 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-10-11 02:22:36,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:36,766 INFO L225 Difference]: With dead ends: 26 [2021-10-11 02:22:36,766 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:22:36,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:22:36,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:22:36,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 02:22:36,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:22:36,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-10-11 02:22:36,815 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2021-10-11 02:22:36,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:36,816 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-10-11 02:22:36,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:22:36,816 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-10-11 02:22:36,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:22:36,818 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:36,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:36,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:22:36,819 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:36,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:36,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1718131711, now seen corresponding path program 1 times [2021-10-11 02:22:36,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:36,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101076122] [2021-10-11 02:22:36,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:37,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:22:37,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101076122] [2021-10-11 02:22:37,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641683878] [2021-10-11 02:22:37,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aefaf776-1add-403e-af58-9a88e1750417/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:37,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-11 02:22:37,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:37,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:22:37,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:37,525 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:22:37,750 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:22:37,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1188535737] [2021-10-11 02:22:37,777 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-10-11 02:22:37,777 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:22:37,782 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-11 02:22:37,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:22:37,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 15 [2021-10-11 02:22:37,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81202867] [2021-10-11 02:22:37,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-10-11 02:22:37,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:37,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-11 02:22:37,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:22:37,788 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 15 states. [2021-10-11 02:22:37,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:37,952 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2021-10-11 02:22:37,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:22:37,953 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 21 [2021-10-11 02:22:37,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:37,954 INFO L225 Difference]: With dead ends: 16 [2021-10-11 02:22:37,955 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:22:37,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-11 02:22:37,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:22:37,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:22:37,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:22:37,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:22:37,962 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-11 02:22:37,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:37,962 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:22:37,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-10-11 02:22:37,963 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:22:37,963 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:22:38,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:22:38,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:22:38,251 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:22:38,251 INFO L262 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2021-10-11 02:22:38,252 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:22:38,252 INFO L262 CegarLoopResult]: For program point L29(lines 29 33) no Hoare annotation was computed. [2021-10-11 02:22:38,252 INFO L265 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: true [2021-10-11 02:22:38,252 INFO L262 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2021-10-11 02:22:38,252 INFO L265 CegarLoopResult]: At program point L26(lines 26 34) the Hoare annotation is: true [2021-10-11 02:22:38,252 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 32) no Hoare annotation was computed. [2021-10-11 02:22:38,252 INFO L265 CegarLoopResult]: At program point f91ENTRY(lines 17 23) the Hoare annotation is: true [2021-10-11 02:22:38,253 INFO L262 CegarLoopResult]: For program point f91FINAL(lines 17 23) no Hoare annotation was computed. [2021-10-11 02:22:38,253 INFO L258 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (<= |f91_#in~x| f91_~x) (<= f91_~x 100) (<= f91_~x |f91_#in~x|)) [2021-10-11 02:22:38,253 INFO L262 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2021-10-11 02:22:38,253 INFO L258 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (and (<= |f91_#in~x| f91_~x) (<= f91_~x 100) (<= |f91_#t~ret7| 101) (<= f91_~x |f91_#in~x|)) [2021-10-11 02:22:38,253 INFO L262 CegarLoopResult]: For program point f91EXIT(lines 17 23) no Hoare annotation was computed. [2021-10-11 02:22:38,253 INFO L262 CegarLoopResult]: For program point L18(lines 18 22) no Hoare annotation was computed. [2021-10-11 02:22:38,253 INFO L262 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2021-10-11 02:22:38,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:22:38 BoogieIcfgContainer [2021-10-11 02:22:38,261 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:22:38,261 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:22:38,261 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:22:38,261 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:22:38,262 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:36" (3/4) ... [2021-10-11 02:22:38,264 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:22:38,272 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f91 [2021-10-11 02:22:38,277 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-11 02:22:38,277 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:22:38,278 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:22:38,278 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:22:38,315 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aefaf776-1add-403e-af58-9a88e1750417/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:22:38,315 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:22:38,317 INFO L168 Benchmark]: Toolchain (without parser) took 2959.07 ms. Allocated memory was 117.4 MB in the beginning and 161.5 MB in the end (delta: 44.0 MB). Free memory was 89.7 MB in the beginning and 56.2 MB in the end (delta: 33.5 MB). Peak memory consumption was 78.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:38,318 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 117.4 MB. Free memory was 71.4 MB in the beginning and 71.4 MB in the end (delta: 63.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:38,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.41 ms. Allocated memory is still 117.4 MB. Free memory was 89.4 MB in the beginning and 92.5 MB in the end (delta: -3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:38,319 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.11 ms. Allocated memory is still 117.4 MB. Free memory was 92.5 MB in the beginning and 91.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:38,320 INFO L168 Benchmark]: Boogie Preprocessor took 17.67 ms. Allocated memory is still 117.4 MB. Free memory was 91.3 MB in the beginning and 90.3 MB in the end (delta: 995.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:38,320 INFO L168 Benchmark]: RCFGBuilder took 305.90 ms. Allocated memory is still 117.4 MB. Free memory was 90.3 MB in the beginning and 77.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:38,321 INFO L168 Benchmark]: TraceAbstraction took 2246.84 ms. Allocated memory was 117.4 MB in the beginning and 161.5 MB in the end (delta: 44.0 MB). Free memory was 76.7 MB in the beginning and 58.4 MB in the end (delta: 18.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:38,321 INFO L168 Benchmark]: Witness Printer took 53.84 ms. Allocated memory is still 161.5 MB. Free memory was 58.4 MB in the beginning and 56.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:38,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 117.4 MB. Free memory was 71.4 MB in the beginning and 71.4 MB in the end (delta: 63.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 297.41 ms. Allocated memory is still 117.4 MB. Free memory was 89.4 MB in the beginning and 92.5 MB in the end (delta: -3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.11 ms. Allocated memory is still 117.4 MB. Free memory was 92.5 MB in the beginning and 91.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.67 ms. Allocated memory is still 117.4 MB. Free memory was 91.3 MB in the beginning and 90.3 MB in the end (delta: 995.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 305.90 ms. Allocated memory is still 117.4 MB. Free memory was 90.3 MB in the beginning and 77.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2246.84 ms. Allocated memory was 117.4 MB in the beginning and 161.5 MB in the end (delta: 44.0 MB). Free memory was 76.7 MB in the beginning and 58.4 MB in the end (delta: 18.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 16.1 GB. * Witness Printer took 53.84 ms. Allocated memory is still 161.5 MB. Free memory was 58.4 MB in the beginning and 56.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 32]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 2, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 20 SDslu, 49 SDs, 0 SdLazy, 135 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 11 PreInvPairs, 13 NumberOfFragments, 26 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 5888 SizeOfPredicates, 5 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 25/36 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...